ILR class spaces remain available SLIPPERY ROCK — Spaces are still available for classes being offered by the Institute for Learning in Retirement (ILR).The ILR classes are taught at the Fowler Building at Slippery Rock University, 165 Elm St.Times vary, but are always late morning or early afternoon to appeal to retirees, though it is not necessary to be retired to attend.Upcoming classes are:April 16: TitanicApril 16: eBay buying and sellingApril 22 through May 6: “Advanced Watercolor Painting”April 23 and 24: “Human Trafficking”April 25 and May 2: Tourism in Warren, Crawford and Erie countiesApril 30: Food for healthy aging.Fees apply to some classes. Call 724-738-1604 to register and get more information, or email info@ilretirement.org.